Ortho rotor plane



April 3, 1928. I 1,665,171

JViV. MATTESON, JR

, ORTHO ROTOR PLANE Filed Nov. 24, 1926 2 Sheets-Sheet l jegse Va MQZ Z /E WM M April 3,1928. 1,665,171

J. V. MATTESON, JR

ORIHO ROTOR PLANE Filed Nov. 24. 1926 2 Shuts-Sheet 2 :4 v h gwuento o Jc55e. Vance Maffesomal:

Patented Apr. 3, 1928.

.mamamas I q eai sesa amnesiaonrrno no'ron' PLANE.

Application filed November 24, 1926. Serial N 'o. 150,617.

This invention relates to what I term an ortho-rotor plane; that is, a plane particularly adapted for the usejofforthodontists intheshaping of the plaster casts used. in the'practice of denistry. "Theobject of the invention is to provide a simple, compact and easily portable power plane of a nature adapted to act upon these plaster "casts, which'lnay be Operated from an-ordinary electric light socket and which will'render it possible for the dentist to do by power, 'work that has heretofore beenaccomplished' by hand, at theexpense of much time and ielectriolight connection in the office of a scription which follows. a

ing is laid down on its side. v Fig. 4 is an end view of the-closure section'of the casing, and

Fig. 5 is a detail view of the cutting mechilabor.

Furtherobjects and advantages of-the invention will be set forthfi'in the detailed-de- 1 "In the'ac'companyingg drawings,

Fig. 1 is a View partly in side elevation and partly'in section of the device ofthe present invention, showing the cover slightly separated from the casing. p i 1 Fig. 2.is a view of-a closure section of the casing. 1

v Fig- 3 is a. side viewfof the apparatus in working position. It is atright angles to Fig. 1,. but .is still a side elevation because Fig.1 shows the carrying positionof the apparatus while Figs v3 shows the Working position ofthe-apparatus whereinth'e casanism or planeassembly.

"Like 7 numerals. designate corresponding parts in all of the figures of the drawings. a Referring to the drawing, 5 designates a 1 casing provided with a carrying handle 6,

and rubber knobs or. other supporting feet 7. A partition 8 divides the casing'into compartments 9 and 10. Thecompartment 9 receives a motor. 11. :The casing carries a plug-in socket 12 by which current may be supplied to the motor from any ordinary dentist or otheruser of the appliance. The

circuit to the motor includes a controlling switch 12 of a usual and known construction. The shaft 13 of the motor carries a grooved pulley 14 over which a cable 15 passes. This cable passes over grooved idler guide I pulleys l6 and 17 and over a correspondingly grooved pulley 18, which'is fast upon the shaft 19 of a rotary planing'blade 20. From this it is clear'that rotation of the when in place,

motorwillimpart rotation at comparatively high speed to the blade of the rotary plane. '7

The shaft of the rotor'fbla de is journaled -in bearings of an antifriction character. indicated at 21 andv 22iand is additionally supported upon athrust bearing23bywl1ich it projects beyond the line, ofthemain poris laid down upon its back, as in Fig., 3,- this projecting portion offsaidcasingiwilliconst tutelwhat',is," in efie'ct, a projecting. ledge.

This projectingportion ofthe casing carries ,the we ight'of the shaft and blade are car ,ried. By referring to Fig. 2 it will be seen jthat the casing comprises aportion 5?} which is'in the nature of fan extension. That is,

tion ofthe casing so that when the-' cas ing=--' a track 26 upon which a sliding table 27 has move ment, it being manifest that this movement is across theface of" blade of the plane. 4 The space beneathfsaid sliding table is utilized to ;receiveia p laster drawer 27 7. Compartment 10 .is' likewise utilized forthe receptionof a 'plasterdrawer 28. A'sliding glasslpane 29 is mounted in guides 30 of the casing and, whenf the. devi'ce is in use, may be drawn outj ginto the' particles of plastericut H off; by; the plane" blades, to constitute'a baffie, to catch suchflying particles andtopreventthem from being thrown out'into the room.

A cover- 30 carries snap fasteningsl l adapted to engage with complemental mempath of the flying hers 32 upon the casing 5,;saidfcover serving to l s the. e sing 5 an t house the projecting portions of' fpulley 18, plane-blade 20'andithe sliding table. 1 v

Heretofore the shaping and trimming fof fthe plaster models 'used'bydentists in the practice of itheir profession, have been done by a knife'and a small block plane, these instruments having been m anually, manipulat-ed. ,.;The trimming of-the plaster used canbe'fairly readily accomplished .by hand if performed within twenty-four hours after h -.p 1 er b n po r dafl ws i i is not, valways,convenient; to trim the castwithin that time andif the plaster'has set for a longer period of time. than that, its hardness is such as to make'the operation of shaping the same by hand; both time consuming and arduous; In the use'of the plane of the present invention, the degree of dryness ma-kes no-difference as far as the rapidity of the finishing is concerned and the angles and surfaces obtained are uniformlyac curate. I am a practicing dentist no i claim is:

' ing an electric motor,

rotary plane blade and driving connections between the plane "blade and the rotor,;sa1d

- said" casing and and my experience indicates that the -average orthodontist can save, as a minimum, a hundred hours a year by theuse of the machine of the present invention, additional advantage that the finished work will present more accurate angles and more smoothly finished surfaces than can be obtained by the old hand method.

It is to be understood that; the invention is not limited to the precise construction set forth but that it includes within its purview whatever changes fairlycome within either the terms. or the spirit .of the appended claims. 7 j

Having described my invention what I 1'.i-A device: of the character described an assembly compriscomprising a casing,

a vertically disposed assembly being disposed diagonally across a table slidable across said casing outside'of-said plane blade;

Y 2. A device of the character described comprising a portable containing casing shaped to form a projecting ledge at one side,

--to be moved; with respect to the casing adjacent said ledg an electric motor within the casingfavertically disposed plane'blade at that side'of juncture of the casing'with said ledge, driving connections between the motor and the plane blade and a sliding table supported upon the ledge and movable acrossthe face I of the plane blade.

' 3. A structure as recited inclaim 2"in combination with'a cover adapted to rest upon said ledge and house the'plane blade. 4. A structure as recited in claim 2; in combination with a slidable baffle adapted the main'body "of'the casing and to a position where it will overlie the projecting ledge and act to catch particles of plaster dislodged by blade V i 54A device. of the characten described 'the plane comprising acasing having a bodyportion f and a pro ecting portion which extends beyond said body portion, said casing being ad'aptedto resteither upon its bottom or upon its side, a carrying handle upon the top of the casing, the projectingp'o'rtion of the casing constituting a ledge when said casing is supported upon its side, trackways with the of the casing,

pulleys, a cable passing. over e an d'at'the comprising an electric motor, the shaft of which carries a grooved pulley, a vertically disposed plane blade, means for mounting the shaft of saidplane blade for rotation, a grooved pulley carried by the shaft of the plane blade, a pair of grooved idler grooved pulleys through which rotation of the electric-motor is imparted to the rotary plane blade and slidable means for moving work across the face of the plane blade.

all ofthe 7. A device ofwthe character described comprising a portable containing casing shaped to form a projecting ledge'at one side, an electric motor'within the casing,

a vertically disposed iplane. blade at that side of the casing adjacent said ledge and at the juncture of the casing with said ledge and driving connections between the motor and theplane blade.

8QThe combination with a portable supporting casing, of an electric motor disposed upon itsside therein with its shaft substantially horizontally disposed, a rotary plane blade disposedtherein withits axis vertically disposed, means for driving the plane blade from the motor and a work carrying table supported within and by the portable casing and mounted toslide across the faceof the plane blade. V r r 9. The combination with a supporting casing of an electric motor horizontally disposed therein and extendingdiagonally thereof, a rotary plane blade vertically disposed therein, a work table supported within and by the portable casing and mounted to v slide across the face ofthe plane'blade and a pulley and cable drive betweentheshaft of the motor and the plane blade.

JEs sE VANCE MATTESON', JR.

In testimony whereof I ailix my signature. v 

